andreaturli/jclouds — comment on commit ddb745f62065cc0e6faa27ec009754d9a1e2f33e
File: labs/virtualbox/src/test/java/org/jclouds/virtualbox/statements/GuestAdditionsInstaller.java line 75
By jclouds:

here's where you are missing the .get()

submitScriptOnNode returns a future. in order to block on completion, you need to call .get()